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Q.
The number of arrangements of the letters of the word BANANA in which two N’s do not appear adjacently is
A.
40
B.
60
C.
80
D.
100
E.
None of the above
View Answer
Correct choice: A
Explanation:
Required number of arrangements
= (Total number of arrangements)
– (Number of arrangements in which N’s are together) =6!/2!3! - 5!/3!=60 - 20 =40.
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